57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
|
/* This testcase is part of GDB, the GNU debugger.
|
||
|
|
|
||
|
|
Copyright 2013 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation; either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#ifdef SYMBOL_PREFIX
|
||
|
|
#define SYMBOL(str) SYMBOL_PREFIX #str
|
||
|
|
#else
|
||
|
|
#define SYMBOL(str) #str
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* `set_point' further below is the label where we'll set tracepoints
|
||
|
|
at. The insn at the label must the large enough to fit a fast
|
||
|
|
tracepoint jump. */
|
||
|
|
#if (defined __x86_64__ || defined __i386__)
|
||
|
|
# define NOP " .byte 0xe9,0x00,0x00,0x00,0x00\n" /* jmp $+5 (5-byte nop) */
|
||
|
|
#else
|
||
|
|
# define NOP "" /* port me */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int
|
||
|
|
main(void)
|
||
|
|
{
|
||
|
|
/* Note: 'volatile' is used to make sure the compiler doesn't
|
||
|
|
optimize out these variables. We want to be sure instructions
|
||
|
|
are generated for accesses. */
|
||
|
|
volatile int i = 0;
|
||
|
|
|
||
|
|
/* Generate a single line with a label in the middle where we can
|
||
|
|
place either a trap tracepoint or a fast tracepoint. */
|
||
|
|
#define LINE_WITH_FAST_TRACEPOINT \
|
||
|
|
do { \
|
||
|
|
i = 1; \
|
||
|
|
asm (" .global " SYMBOL (set_point) "\n" \
|
||
|
|
SYMBOL (set_point) ":\n" \
|
||
|
|
NOP \
|
||
|
|
); \
|
||
|
|
i = 2; \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
LINE_WITH_FAST_TRACEPOINT; /* location 1 */
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|